About: http://webisa.webdatacommons.org/253442459

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Measuring just one square millimetre and less than one micrometre thick, they can store information, such as batch number and origin, through the presence or absence of a magnet.
http://www.w3.org/ns/prov#wasQuotedFrom	newscientist.com